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A macroscopic mass from quantum mechanics in an integrated approach

Physics

A macroscopic mass from quantum mechanics in an integrated approach

F. C. Seifert, A. R. Panna, et al.

Explore groundbreaking research where a direct measurement links macroscopic mass and quantum standards in a single experiment. This innovative study conducted by Frank C. Seifert and colleagues utilizes graphene quantum Hall arrays for enhanced resistance scaling and improved precision in measurements.

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~3 min • Beginner • English
Abstract
The revision of the International System of Units (SI) on May 20th, 2019, has enabled new improved experiments to consolidate and simplify mechanical and quantum electrical metrology. Here, we present the direct measurement between a macroscopic mass and two quantum standards in a single experiment, in which the current used to levitate a mass passes through a graphene quantum Hall standard. The Josephson effect voltage is compared directly to the resulting quantum Hall effect voltage. We demonstrate this measurement with the use of graphene quantum Hall arrays for scaling in resistance with improved uncertainty and higher current level.
Publisher
Communications Physics
Published On
Dec 10, 2022
Authors
Frank C. Seifert, Alireza R. Panna, I-Fan Hu, Lorenz H. Keck, Leon S. Chao, Shamith U. Payagala, Dean G. Jarrett, Chieh-I Liu, Dipanjan Saha, Randolph E. Elmquist, Stephan Schlamminger, Albert F. Rigosi, David B. Newell, Darine Haddad
DOI
https://doi.org/10.1038/s42005-022-01088-7
Tags
quantum standards
graphene
measuring mass
Josephson effect
quantum Hall effect
resistance scaling
current levitation

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